diff --git a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/order_movement_simulation_interaction_workflow/scripts/OrderMovement_unlinkSimulation.xml b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/order_movement_simulation_interaction_workflow/scripts/OrderMovement_unlinkSimulation.xml
index 82312d61ac56b65c8e1bf63247663600fdb4702f..eab05742c9728f67eba3091807266d265b13f31a 100644
--- a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/order_movement_simulation_interaction_workflow/scripts/OrderMovement_unlinkSimulation.xml
+++ b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/order_movement_simulation_interaction_workflow/scripts/OrderMovement_unlinkSimulation.xml
@@ -59,6 +59,9 @@
 simulation_movement_list = order_movement.getOrderRelatedValueList(\n
     portal_type="Simulation Movement")\n
 for simulation_movement in simulation_movement_list:\n
+  if simulation_movement.getDelivery() == order_movement.getRelativeUrl():\n
+    simulation_movement.setDelivery(None)\n
+  # \'order\' category is deprecated. it is kept for compatibility.\n
   if simulation_movement.getOrder() == order_movement.getRelativeUrl():\n
     simulation_movement.setOrder(None)\n
 </string> </value>
diff --git a/bt5/erp5_base/bt/revision b/bt5/erp5_base/bt/revision
index a3d3658d4368a8857b932e02b560338eae532268..96fb20c16efc73484cbde752af3df661dac90a75 100644
--- a/bt5/erp5_base/bt/revision
+++ b/bt5/erp5_base/bt/revision
@@ -1 +1 @@
-690
\ No newline at end of file
+691
\ No newline at end of file